Sheet-gripping device for printing-presses.



H. LANG. SHEET GBIPPING 1mm 1-03 PRINTING PBESSES.

APPLICATION FILED MAY 31,1913.

Patented Aug. 25, 191% 2 SHEETS-SHEET 1.

H. LANG. SHEET SHIPPING DEVICE FOR PRINTING PRESSES.

APPLICATION FILED MAYSI, 1913.

Patented Aug. 25, 1914.

2 SHEETS-SHEET 2.

"-- it is one of the ob ects of my invention to 2;}. The means by whichspasm use, cnicaeesiuimois,'assrenoia are THE Goss amma mess commas,or'cnxcaec,

ILLINOIS, econometrics or rumors.

sneer-sme led" DEVICE ron rmnrmerasssss.

p p s tt l a ca Patented Aug. 25, 1914.

Application tiled May 31, 1813. semi No. 770,965.

To all whom it may concern:

Be it known that 1, Hnnsa'r' Lane, a

citizen of-the United.*States, residin at Chica o, in the county ofCoolr,.1n the btate of Illinois, have invented certain new-and usefulImprovements in Sheet-Gri ping.

Devices for -Printin -Prcsses, of whici the following is a speci cation,reference being had to the accompanying drawings.

This invention relates to sheet gripping for printing presses.Heretofore in some constructions the "rip )ing devices, which carry asheet or a )lmc ll of sheets around on thc su rfaceof'a cylinderv by,ressing theirlead ed es against the cy inder, have been closed y meansof a lever provided with a stud or roller working on a suitable cam,such closing being accomplished against the action of a sprmwhich'automatically ens the gri )pcr w en thev roller passes o of thehigli portion of the cam. In this-construction no adequate provision hasbeen made or varyingthe throw of the gripping devices in closing to suitditierent t nckncsses of paper, diilercnt numbers of sheets to begripped or other varying conditions. Moreover, inasmuch as the closingof the gripper effected by the cam has been against the action of thespring by which the gripper is adapted to be closed, there has been avery considerable wear upon the cam and upon the roller.

provide a construction in which the gripper is closed through the mediumof a iositive movement of the operative mem er, in which the extent ofthe throw of the gripper may be varied.

it is another object to provide in a consll'tutiun of this sort meansfor mounting the gripper device yieldingly relative to the positivelyactuated member by which it is closed.

It is another object to provide a construction com risin a cam forclosin the gri per in w iich t. ie closing action mil not be against theaction of a spring by which the gripper is adapted to he opened by whichimproved construction the wear upon the ram shall be matcriallvdecreased.

it is another object o my invention to imn'ove devices of this sort insundry details iereinaftcr pointed out.

, oLThat: which I I have, accomplished these'objectsJ-are illustratedinsthe accompanying drawings and are hereinafter specificallyidescribed.

believe to be new is set f0rtlrin:tlie claims.

Inthe drawings,-Figure 1 is an end view of a. cylinder provided with myim provements, the main portion of the operatmg cam beinglr shown onlydiagrammatically in order to is able to show the parts beyond in fulllines Fig. 2 is a view of the cylinder, shown in Fig. 1 as seen from theleft in Fig. 1; Fig. 3 is aview similar to Fig. 1 illustrating aditierent phase of the operation of the cylinder; andFig. 4 is anenlarged detail showing the manner in which the {grippers are mountedupon the gripper sha t. 1

Referring to .the several figures of the drawings in which correspondingparts are indicated by the same reference characters- 'indicates acylinder, which may be either the rotary carrier of a rotary foldingmachine or may be a collecting cylinder of any well-known type, or maybe a gripper cylinder of any well-known form. 11 indicates the shaftupon which said cylinder is mounted, said shaft being supported in anysuitable framework not shown. 12 indicates a gripper shaft revoluhlymounted in said cylinder near its outer periphery. said shaft. 12 havingfixed upon it at suitable intervals thcrcnlonrz a plurality of grippers13 mounted upon said shaft in suitable reeesses M in the surface of thecylinder. As best shown in Fig. 4 the grippers 13 are secured by meansof suitable screws upon split collars 15 which are clamped by .means ofscrews 16 upon the shaft 12. As

also shown in said Fig. 4 the outer ends of the grippers 13 are adapted.to be brought down squarely upon the edge of the sheet of paperer of abunch of sheets of paper lying upon the surface of the cylinder 10, suchsheet or sheets being indicated in Figs. 1 and 4 by the numeral 17.

Coming now to the means for rocking the gripper shaft 12, 18 indicates alever secured by means of a key 19 upon the outer end of the shaft. 12.

'20 indicates a rod pivotally secured by means of a screw 21 to the endof the lever 18.

22 indicates a lever pivotally mounted mpon a stub-shaft 23 carried bythe cylinder.

2i indicates a swivel-eye mounted on one end of the lever 22, throughwhich the rod passes, a spring being mounted on sui'l rod between theswivel-eye 2-1 and a 5 collar :26 which is secured by means of asetserew 2T adustably upon said rod. 98 indicates nuts scrmv-thremlcd 11ion the end of the. rod 20 beyond the swivel-eye 24. 29 indicates a rodpivotally mounted to the oppositcend of the lever 22.

indicates a link one end of Which is rovolubly mounted upon the shaft 12and the other end of which is pivotally c'ounet-ted lo the free end ofthe rod 29 by means of a bolt 31. .llountcd upon the free end of thelink or lever 30 is a stud 32, in the construction shown being in theform of a roller revoluble upon the bolt 31.

38 indicates a cam member (shown largely diagrammatically in thefigure)provided with a bracket 34 by which it is mounted upon the framework ofthe machine in any suit-able manner (not shown) the bracket 34: being-'-provided with an arc-shaped slot by which connection is to be made withthe framework whereby the cam member can be given a partial rotationrelative to the frame. [is best shown in Figs. 1 and 3, the cam member33 is provided with a cam so ,lil'nmh an in which said roller 32operates, the greater portion of said cam groove being, concentric aboutthe axis of rotation of the cylinder, but. a portion thereof being amoderate, easy digression from circular form.

it. will be readily understood that with the cylinder in rotating inclockwise direction in the figures, for the greater part of the rotationthe roller 32 will operate in the circular part of the cam groove 36,whereby it) the lever .22 is held in the position shown in Fizz. 1.serving through the medium of the spring: 25 to hold the lever 13 in theposilion there. shown with the gripper l3 pressed yieldingly against thesheet or bundle of sheets 17 upon the cylinder. It will be understoodthat the pressure of the sprin 25 upon the gripper 123 can be regulatedby the adjustment. of the collar 26 through the medium of the set-screw27. When. however. the roller 32 is brought. into engagement with therise of the cam eroove so the lever 22 is turned in a clockwisedirection in Figs. 1 and ii. The first result of u turning of the lever22 in a clockwise direction is the expansion of the spring 25 until theswivel-eye 211- is brought into contact with the nuts 28. whereupon byafurther movement of the lever 22 in clockwise direction the lever 18 isalso given a rotation in the same direction releasing the grippers 13from the paper 17 and opening the grippers finally to such a position asthat shown in Fig. 3. Upon the still further rotation of the cylinder.the roller 32 is, of course area-gar back to the concentric portion 0%the groove 3b turning the lever 29 in counterclockwise direction. Thelever 18 is moved by this'action in the same'direction through 't esprin 25 until just at the end of the movement of the lever 22 thegrippers 13 are brought into engagement with the paper 1? on thecylinder, whereupon the final movement of the lever 212 is against theaction of the spring 25.

What I claim as my invention and desire 7 to secure by Letters- Patentis,

1. The combination of a cylinder, a gripper-shaft revolubly mountedthereon, a plurality of grippers fixed on said shaft, andpositively-actuated means connected to said shaft for rotating it foropening and closing said grippers, the connections between said positivey-actuated means and said shaft comprisingyielding means adapted to bemoved bodily by the operative movement of the actuating means, saidyielding means being adapted to be stressed only at approximate y theend of the operative closing stroke of said actuating means.

2. The combination of a cylinder, a gripper-shaft revolublymountedthereon, a pinrality of grippers fixed on said shaft, a cam memberprm'idcdwith a cam groove. a stud adapted to be actuated positively bymove ment along said cam groove. and connections between said stud andsaid shaft whereby the movement of said'st-ud alon said cam grooveserves to rock said shaft or opening and closing said grippers. saidconnectilm comprising: vieldinp means adapted to he moved bodilv by theoperative movement oi said stud. said yielding means being adapted to bestressed so as to exert a yielding pressure upon said cam only atapproximately the limit of the operative closing stroke of said stud.

3. The combination of a cylinder. a gripper shaft revolubly mountedthereon. a plurality of grippers fixed on said shaft. a lever connectedwith said gripper shaft: l'or rocking it for opening and closing saidgrippcrs. and a cam-member provided with a cam-groove For operating saidlever positively for both opening and Closing said grippers. theconnections between said .eripper shaft and said lever comprisingyielding: means adapted to he moved bodily bv the operative movement. ofsaid lever and adapted to cause said erippers to close upon the completeclosing movement of said lever. the compression of said yielding meanscaused by the closing movement of the. lever being controlled by thethickness of the matter gripped.

4. The combination of a cylinder. a gripper shaft. revolubly mountedthereon. a plurality of grippers fixed on said shaft. a lever connectedwith said gripper shaft. for rocking it for opening and closing" saidgrippers, and a cam-member provided with a cam-groove for operating saidlever posiofsaid first-named lever being controlled tively for bothopening and closing said by the thickness of the matter gripped.grippers, the connections between said grip: 8. The combination of acylinder, a gripper shaft. and said lever comprising a secper shaftrevolubly mounted thereon, a pinond lever fixed on said shaft and aspring rality of. rip was fixed on said shaft, a lever interposedbetween said two levers adapted couuecte Wllill said gripper shaft forrockto cause said grippers to close upon the coming, it for openim andclosing said grippers, plctc closing movement of said first-named and acam-mom er provided with a camlever. "move for operatingsaid leverpositively The combination of a cylinder, a grip- 'or both opening andclosing said grip was, per shaft revolubly mounted thereon, a plutheconnections between said gripper s haft rality of grippers fixed on saidshaft, a and said lever cmnprising a second lever lever connected withsaid gripper shaft for fixed on said shaft, a rod pivotally mountedrocking it for opening and closing said gripon said second lever andpassing through 15 pers, and a cam-member provided with a an eye on saidfirst-na1ned lever, means tam-groove for operating said leverposicarried by said rod adapted to limit the lively for both opening andclosing said extent to which said rod may withdraw grippers, theconnections between said gripfrom said eye, and a compression spring pershaft and said lever comprisin a secmounted on said rod adapted to causesaid z p-Ind lever fixed on said shaft, a rod pivotally grippers toclose the complete closing move- Iniounted on said second lever andpassing ment of the first-named lever, the means by through an eye onsaid first-named lever, which the withdrawal of the rod from the and acompression spring mounted on said eye of the second lever is controlledbeing rod adapted to cause said grippers to close so positioned that thecomplete closing move- 5 upon the complete closing movement of said meatof the first-named lever does not serve first-named lever. to compresssaid spring except to the extent The combination of a cylinder. agripthat the grippers are held from complete per shaft revoluhly mountedthereon, a plnclosing by the matter gripped. rality of grippers fixed onsaid shaft, a t). The combination of a cylinder, a grip- 30 ilcverconnected with said gripper shaft for per shaft revolubly mountedthereon, a plurocking it for opening and closing said griprality ofgrippers fixed on said shaft, a lever pers, and a cam-member providedwith a connected with said gripper shaft for rockcam-groove foroperating said lever posiing it for opening and clcsing said grippers,lively for both opening and closing said and a ram-member provided witha cam- :15 grippers. the connections between said gripgroove foroperating said lever positively m0 per shaft and said lever comprising asecfor both opening and closing said grippers, cud lever fixed on saidshaft. a rod pivotally the connections between said gripper shaftmounted on said second lever and passing and said lever comprising asecond lever through an eye on said first-named lever, fixed on saidshaft, a rod pivotally mounted in means carried by said rod adapted tolimit on said second lever and passing through an (no imp to which saidrod may withdraw an eye on said first-named lever, means ourgu from saideye. and a compression spring ricd by said rod adapted to limit the ex-I u ounfed on said rod adapted to cause said tent to which said rod maywithdraw from grippers to close upon the complete cl sing said eye, acompression spring mounted on m vement of said first-named lever. saidrod adapted to cause said grippers to H l T. The combination of acylinder. a gripclose upon the complete closing movement per shaftrevoluhly mounted thereon. a pluof said first-named lover, a collar onsaid rrdity of grippers fixed on said shaft. a lever rod against whichone end of said spring connectwl with said gripper shaft for I'ml bears,and means for holding said collar on ing it for opening and closing saidgrippers. adjustably in position on said rod whereby and a cam-mcrnherprovided with a camthe pressure of said spring against said firstgroovofor operating said lever positively for named lever may be varied. bothopening and closing said grippers, the l The combination of a cylinder,a gripconnections between said gripper shaft and per shaft. rcvoluhlymcuutcd thereon, a plu- 55 said lever comprising a second lever fixedrality ot' grippers fixed on said shaft adapton said shaft, a rodpivotally mounted on ed to close against the surface of said CYllllsaidsecond lever and passing th ough an der. an arm rcvolnbly mounted onsaid sllnft, eve on said first-named lever. means carried a linkpivotally connected to said arm. a by said rod adapted to limit theextent to lever pivotally mounted on said cylinder and 60 which said rodmay withdraw from said pivotally connected at one end with said eye. anda. compression spring mounted on link. connections between said leverand said rod adapted to cause said grippers to said gripper shaft forrocking the shaft elosc upon the complete closing movement of foropening and closing said grippers, a fe id first-named lever. thecompression of roller carried by said link and said arm,

said spring caused by the closing movement and a cam-member providedwith a mum 1,108,198 Li! bvi l of said lpvm', the (.(JIIIPI'CHSiUH ofsaid spring ca'us'edby'the cl'osmg'nmvement of the Leverbeing"c0ntrd1led bythe'thickncss of 'tho nmttel-gripped.

- 1111131 1111 LANG.

Witnesses:

JOSEPH J. WALSER, GORDON C. Anno'r'r.

Cam-as m? his patent may be abtainmi is)! five cams man, by addressingthe Commirssioner of Ev-tents,

" 'Wanbtagtaa,$3. Q."

